Instantaneous heater.



No. 774,298. PATE'NTED NOV. 8. 1904.

w. WISHART.

INSTANTANEOUS HEATER.

APPLICATION FILED MAY 23. 1903.

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PATENTED NOV. 8, 1904.

' W. WISHART. INSTANTANEOUS HEATER.

N0 MODEL.

APPLIOATIOH FILED MAY 23. 1903.

4 SHEETS-SHEET '2.

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w. WISHABT. INSTANTANEOUS HEATER.

APPLICATION FILED MAY 23, 1903.

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N0 MODEL.

kiiillilllllliilillllli No. 774,298. PATENTED NOV. 8, 1904.

W. WISHART. INSTANTANEOUS HEATER.

APPLICATION IILED MAY 23, 1903.

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NO MODEL.

UNITED STATES Patented November 8, 1904.

PATENT ()FFICE.

WVILLIAINI \VISHART, OF CHICAGO, ILLINOIS, ASSIGNOR OF TVVO-THIRDS TO HERMAN KRUGER AND FRANK DALE, OF CHICAGO, ILLINOIS.

INSTANTANEOUS HEATER.

SPECIFICATION forming part of Letters Patent No. 774,298, dated November 8, 1904.

Application filed May 23, 1903. Serial No. 158,430. (No model.)

To all whom it may concern.-

Be it known that I, VVILLIAM IVIsHART, a citizen of the United States, and a resident of the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Instantaneous Heaters; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates more particularly to a water-heater of the class known as instantaneous water-heaters and provided with a sterilizing device for the use of dentists, surgeons, barbers, and others.

The object of the invention is to provide a compact and simple construction designed to provide a large quantity and steady flow of hot water with a small expenditure of heat and in connection therewith to provide a sterilizing-receptacle in which instruments or the articles to be sterilized may be immersed in boiling water for any desired length of time without interfering with the operation of the device in furnishing a continuous flowof hot water for other purposes.

The invention embraces many novel features; and it consists in the matters hereinafter described, and more fully pointed out and defined in the appended claims.

In the drawings, Figure 1 is a perspective view, partly broken, of a device embodying my invention. Fig. 2 is a longitudinal vertical section of the same, taken transversely of the burner. Fig. 3 is a plan view of the water-tubes, partly in section, with the casing and burner omitted. Fig. 4 is a section taken on line 4c 4: of Fig. 2. Fig. 5 is a top plan View of the burner and combined water and gas valve. Fig. 6 is a top plan view of the water-pan. Fig. 7 is a horizontal section of the same. Fig. 8 is a side elevation of said pan.

As shown in said drawings, A indicates a base aperturecl to provide an indraft of pure air and having connected therewith the cas ing B, shown as rectangular, but which may obviously be of any desired form and which is provided near the top with apertures to 5 permit the escape of the gases of combustion.

C indicates as a whole a combination-valve which acts to regulate the flow of hydrocarbon fuel in gaseous form and water into the device by means of a single lever and which is connected on one side with the fuel-supply pipe E and the pipe 6, which leads to the burner E, and on the other side with the water-supply pipe D and the pipe (Z, which communicates with the water-tubes, (indicated as a whole by D.) Said burner, as shown, comprises a plurality of tubular parallel sections 6 sufiicient distance apart to provide air for draft between the same and each of which is angular on its upper surface, providing on each 5 side downwardly-inclined sides each having a plurality of longitudinally-aimed apertures therein adapted to permit the escape of hydrocarbon vapor therefrom. Said burner-sections are rigidly secured to and communicate with a tubular mixing-chamber 6 which extends transversely below the same near their rear ends and from which opens outwardly a tube 6 into the open end of which is directed the end of the hydrocarbon-supply pipe 0 in 7 5 the usual manner.

The water-tubes (indicated as a whole by D) are located above the burner and, as shown, comprise a plurality of vertically-extended thin tubular pans or water-tubes d, each hav- 0 ing a length slightly less than the width of the casing, as shown in Fig. 4:, and arranged so that the lower edges of the same extend between and slightly below the tops of adjacent burner-sections. Extending across the top 5 of said tubes 03, at each end of the same, are

the tubes (Z 6Z3, which communicate with the tube d at the top thereof, as shown in Fig. 3, and in which are provided partitions d, so arranged that when water is admitted to the 9 tube 61 through the tube 65 the water is compelled to flow through the entire length of each of the water-tubes d and alternately through each of the tubes (Z and 0Z to the exittube 61 connected in the rear end of the tube d Located a little above the top ofthe watertubes (Z is the flat horizontal closed pan F,

which, asshown, is annular and into which the tube d opens, conducting the water heated by its passage through the tubes 01 thereinto and through the central aperture and at the sides of which the gases of combustion pass upwardly, as shown in Figs. 2 and 4:. Above said pan F is provided an open cup G, the mouth of which extends above the top of the heater and is soldered or brazed or otherwise permanently secured in and to the top a of the casing. At the upper margin of said cup a downwardly and outwardly extending flange a is provided, which, as shown, is circular and which at its outer edge is secured by soldering, brazing, or other preferred means to the top of the heater, thereby providing an annular chamber (indicated at Gr) into which the cup discharges through a plurality of apertures provided around the top of the same. Said cup communicates at its bottom with the pan F through the tube f, so that as the water is heated the same flows upwardly through the tubes (1, d (Z and into the pan F, from thence into the cup G through the tube f, and from near the top of said cup flows into said annular chambers G, from which it is free to pass to the point of delivery through the waste-pipe H, which extends downwardly within the casing and out at the bottom.

As shown, the valve C comprises two tubular casings in longitudinal alinement and indicated, respectively, by C and C Each of said casings is provided with an upwardlyextending tube 0 0 into which open the supply-pipe D and E for water and for the hydrocarbon, respectively. A screw-threaded stem is provided in the upper end of each of said tubes, each provided with an external head 0 0, whereby the same may be turned inwardly or outwardly and the size of the orifice varied to regulate the inlet of water and gas, respectively. A stem G at the central part of which the handle cis secured, extends into each of the casings 0 C as shown in Fig. 4, and is provided with passages extending transversely therethrough and registering, respectively, with the hydrocarbon-passage leading through the tube 0 and with the water-passage leading through the tube a, so that rotation of the stem by said lever acts to open or close both valves simultaneously.

For the purpose of connecting a pipe thereto to afford a syringe connection pipes I and K are connected in opposite ends of the water-coil, (or, as shown, the pipe I is connected in the pan,) thus receiving hot and cold water, respectively,and are brought together with their end turned outwardly into a nozzle L, which extends through the casing and is adapted for connection with the usual rubber pipe or other flexible connection adapted to convey the water to the point where desired. Valves 6 and 7c are seated in each pipe and act to regulate the flow,thereby enabling the temperature of the water to be regulated at the nozzle.

The operation is as follows: The pipe E being connected with a supply of fluid hydrocarbon and the pipe D with the water-supply, the valve may be opened, permitting the gas to flow to the burner, carrying therewith into the tube 6 the requisite amount of atmospheric air to produce a burning fluid of sufficient richness. The water flowing through the tube D passes on its course through the tubes and alternately through the tubes cl (Z (Z3 and into the pan F and from thence to the cup G, from which in a boiling condition it is discharged into the annular chamber G and through the discharge-pipe H to the delivery-orifice or may be piped wheresoever desired. The arrangement of the burner, which, as shown, comprises a plurality of tubes approximately rectangular in crosssec tion, is such with respect to the water-tubes d as to produce maximum heating effect upon the sides of said water-tubes and insures perfect combustion of the hydrocarbon because of the air admitted into the mixing-chamber 12 and the air passing through the base A and upwardly between the burner-sections. The gases of combustion pass upwardly above and between said tubes and encounter the flat horizontal closed pan F and are deflected thereby to the sides of and around and through the pan and around the sides and directly against the bottom of the cup G, which, of course, being in open connection with the tubes and pan F, is filled with water, as before described. The water may be very quickly heated, and that in the cup may, if preferred, be made to boil furiously or, if preferred, may be brought to approximately the boiling temperature in the cup and may be raised to a higher temperature in the annular chamber G, the flat horizontal bottom of which receives the maximum effect of the heat. It will thus be seen that the device is adapted to furnish a continuous flow of water through the delivery-pipe, the temperature of which may be regulated by the respective adjustments of the stems c and 0, respectively, which regulatethe inlet of gas and water, respectively, and by means of the lever c. When it is desired to use the device merely as a water-heater, the cup may be closed by means of the tight-fitting cover G which may be gasketed thereon, if preferred, or may lit with a ground joint or in any desired manner may be made suificiently tight to prevent the escape of steam therefrom, and of course said cover may be tightly secured thereon in any desired manner.

Should it be desired to use the device as a sterilizer, the cover is removed and the article or articles to be sterilized are inserted in the cup and subjected to the boiling temperature as long as may be desired.

Inasmuch as the device may be made of very small size and yet yield a large quantity of boiling water, it is obviously adaptable for oilice use by surgeons, dentists, and others, and if used by dentists the water not otherwise required may be delivered into the cuspidor and discharged to the sewer through the drainage-pipe thereof, keeping said cuspidor at all times in a sterilized condition. Obviously, however, the device may be made of any size or pattern and may be usednot only as a water heater and sterilizer. but also may be used for cooking articles of food, if preferred. Obviously many details of construction may be varied without departing from the principles of this invention.

1 claim as my invention 1. A water-heater and a sterilizer comprising a burner, thin vertical water-tubes, arranged parallel above the same, pipes arranged transversely above and affording communication between said tubes, a cup in open communication with the water-tubes and a wastepipe leading from said cup.

2. A water heater and sterilizer comprising a casing, a burner therein, means for delivering hydrocarbon thereinto, thin vertical water-tubes disposed laterally of each other above the burner and connected with a source of water-supply, a plurality of transverse pipes opening into the top of the tubes and a cup located above the water-tubes and communicating therewith and provided at its top with apertures communicating with a waste-pipe.

3. A water heater and sterilizer comprising a source of heat, a plurality of thin flat water-tubes disposed above the same and communicating with a source of water-supply, a valved delivery-pipe leading from said tubes, an open sterilizing-cup located above the tubes and in open communication therewith, and a waste-pipe communicating with the top of'the cup and adapted to permit the excess fluid to flow therefrom.

4:. A water heater and sterilizer comprising in combination a source of heat, water-tubes disposed above the same and adapted for connection with a source of water-supply, a valved discharge-pipe connected therein, an open cup located above the water-tubes and connected with the discharge end thereof, a chamber surrounding the top of the cup and opening thereinto and adapted to receive the overflow therefrom and a pipe leading therefrom to a point of delivery.

5. A hot-water heater comprising in com binatioma plurality of angular burner-sections, a plurality of thin, flat water-tubes vertically disposed above the same and communicating with each other, an inlet-pipe at one end thereof and adapted for communicating with a source of water-supply, a pan above said tubes, an outlet-pipe adapted to deliver hot water therefrom, a pipe communicating with the inlet-pipe, a nozzle communicating with said pipe and with the outlet-pipe and adapted for connection with a flexible pipe of a syringe or the like, and valves in said pipes permitting the temperature of the water delivered from the nozzle to beregulated.

6. The combination with a burner having a plurality of angular burner-sections, of a plurality of thin, flat water-tubes disposed alternately with said sections communicating with each other, a valved inlet-pipe opening into said tubes, a nozzle, valved pipes communicating with the inlet-pipe and the discharge end of the tubes and connecting said nozzle and a close-fitting casing inclosing said tubes and through the side of which the nozzle and valve extend.

7. In a device of the class described the combination with a plurality of angular burnersections, of a plurality of thin, rectangular water-tubes arranged alternately therewith, a transverse pipe communicatively connecting each end of said tubes, a valved inlet-pipe opening into one of said pipes, a pan above said tubes and communicating therewith, a

nozzle, valved pipes leading from said inletpipe and from said pan and connecting with said nozzle, and a close-fitting casing through the side of which the nozzle and valves extend, an open cup in said casing, means for delivering heated water thereinto from said pan and a water-chamber at the upper end of said cup and communicating therewith.

8. A water-heater comprising in combination asectional burner, a plurality of vertical, flat water-tubes arranged alternately with said sections, a transverse pipe connecting said tubes at each end, a valved inlet-pipe opening into one of said pipes, a discharge-pipe, a nozzle communicating with the inlet-pipe and with the discharge-pipe, a casing fitting-closely to the structure thus formed and through which the nozzle and the discharge-pipe open, a sterilizing-cup in the top of said casing and communicating with said tubes and also exposed to the direct heat from the burner and a water-chamber surrounding the top of said cup.

9. In a water-heater thecombination with a burner, of intercommunicating rectangular tubes disposed above the same, an inlet-pipe opening thereinto, a valved discharge-pipe leading therefrom, a shallow closed pan located above said tubes and communicating with the discharge end thereof, a sterilizingcup above the pan and having pipe connection therewith and provided with a plurality of apertures around the top thereof, a casing inclosing the structure thus formed and through which the top of the cup opens, achamber in the top of said casing into which the apertures of the cup open and acting to receive the waste water from the cup, a nozzle extending through the side of the casing, and valved pipes connected with the inlet and the discharge pipes and opening into said nozzle adapting the device for syringe connection.

10. The combination with a casing,of a regulable burner in the bottom thereof, water-tubes disposed above the burner, an inlet-pipe, a valved pipe connected therewith, a superheating water-receptacle above the tubes through which the water passes, a valved pipe leading from said receptacle, an outwardly-directed nozzle communicating with said valved pipes, a cup opening through the top of the casing and communicating with the superheating-receptacle and having perforations around the top thereof, a water-chamber surrounding the top of said cup and a Waste-pipe leading from said chamber to a point of delivery.

11. The combination with acasing, of a plurality of thin, rectangular water-tubes vertically disposed therein, a hydrocarbon-burner below said tubes and having a plurality of angular sections arranged alternately with said tubes, a cold-water inlet and a valve-controlled hot-water discharge communicating with said tubes, a valved pipe communicating with said inlet, an outwardly-directed nozzle into which said valved pipe and discharge open and means for simultaneously regulating the inlet of the water and the hydrocarbon for the burner.

12. In a water-heater the combination with a burner having a plurality of angular sections, of a plurality of vertical, rectangular Watertubes arranged alternately with said sections, inlet and discharge pipes communicating therewith, a nozzle having valved connection with said inlet and discharge pipes and a sterilizing-cup connected with the discharge-pipe and adapted to permit a constant flow of heated water therethrough.

13. A sterilizing device comprising a source of heat, a plurality of fiat, longitudinally-disposed water-tubes above the same, pipes connecting the same and opening, thereinto, an inlet and an outlet pipe communicating therewith, an open sterilizing-cup communicating with said tubes and subjected to the direct action of the heat'li'rom the burner and acting to receive thereinto continuously the flow from the tubes.

14:. A water-heater comprising in combination with a source of heat, of longitudinallydisposed rectangular tubes above the same, pipes connecting said tubes at the ends and communicating therewith, a pan communicating with said tubes, at valved inlet-pipe, a nozzle connected therewith, a valved pipe connecting said pan with the nozzle whereby said heater is adapted to discharge water from the inlet and said tubes both simultaneously and independently.

15. A. hot-water heater comprising in combination the casing, a burner therein, watertubes above the burner, an inlet-pipe and a valved discharge-pipe connected with said tubes, an open sterilizing-cup in the top of the casing, a waste-pipe leading therefrom, an intermediate water-heating receptacle between the water-tubes and said cup and connected with the discharge ends of the watertubes and opening into the cup and an outwardly-directed nozzle connected with said inlet and discharge pipes.

In testimony whereof I have hereunto subscribed my name in the presence of two subscribing witnesses.

WILLIAM WVISHART.

Witnesses:

0. WV. HILLS, HERMAN KRUEGER. 

